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Diffstat (limited to 'arch/ia64/sn/kernel/io_init.c')
-rw-r--r--arch/ia64/sn/kernel/io_init.c299
1 files changed, 234 insertions, 65 deletions
diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 05e4ea889981..00700f7e6837 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -3,7 +3,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 1992 - 1997, 2000-2004 Silicon Graphics, Inc. All rights reserved.
+ * Copyright (C) 1992 - 1997, 2000-2005 Silicon Graphics, Inc. All rights reserved.
*/
#include <linux/bootmem.h>
@@ -76,11 +76,12 @@ static struct sn_pcibus_provider sn_pci_default_provider = {
};
/*
- * Retrieve the DMA Flush List given nasid. This list is needed
- * to implement the WAR - Flush DMA data on PIO Reads.
+ * Retrieve the DMA Flush List given nasid, widget, and device.
+ * This list is needed to implement the WAR - Flush DMA data on PIO Reads.
*/
-static inline uint64_t
-sal_get_widget_dmaflush_list(u64 nasid, u64 widget_num, u64 address)
+static inline u64
+sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
+ u64 address)
{
struct ia64_sal_retval ret_stuff;
@@ -88,17 +89,17 @@ sal_get_widget_dmaflush_list(u64 nasid, u64 widget_num, u64 address)
ret_stuff.v0 = 0;
SAL_CALL_NOLOCK(ret_stuff,
- (u64) SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
- (u64) nasid, (u64) widget_num, (u64) address, 0, 0, 0,
- 0);
- return ret_stuff.v0;
+ (u64) SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST,
+ (u64) nasid, (u64) widget_num,
+ (u64) device_num, (u64) address, 0, 0, 0);
+ return ret_stuff.status;
}
/*
* Retrieve the hub device info structure for the given nasid.
*/
-static inline uint64_t sal_get_hubdev_info(u64 handle, u64 address)
+static inline u64 sal_get_hubdev_info(u64 handle, u64 address)
{
struct ia64_sal_retval ret_stuff;
@@ -114,7 +115,7 @@ static inline uint64_t sal_get_hubdev_info(u64 handle, u64 address)
/*
* Retrieve the pci bus information given the bus number.
*/
-static inline uint64_t sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
+static inline u64 sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
{
struct ia64_sal_retval ret_stuff;
@@ -130,9 +131,9 @@ static inline uint64_t sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
/*
* Retrieve the pci device information given the bus and device|function number.
*/
-static inline uint64_t
-sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
- u64 sn_irq_info)
+static inline u64
+sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
+ u64 sn_irq_info)
{
struct ia64_sal_retval ret_stuff;
ret_stuff.status = 0;
@@ -140,24 +141,79 @@ sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
SAL_CALL_NOLOCK(ret_stuff,
(u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
- (u64) segment, (u64) bus_number, (u64) devfn,
+ (u64) segment, (u64) bus_number, (u64) devfn,
(u64) pci_dev,
sn_irq_info, 0, 0);
return ret_stuff.v0;
}
/*
- * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
+ * sn_pcidev_info_get() - Retrieve the pcidev_info struct for the specified
+ * device.
+ */
+inline struct pcidev_info *
+sn_pcidev_info_get(struct pci_dev *dev)
+{
+ struct pcidev_info *pcidev;
+
+ list_for_each_entry(pcidev,
+ &(SN_PCI_CONTROLLER(dev)->pcidev_info), pdi_list) {
+ if (pcidev->pdi_linux_pcidev == dev) {
+ return pcidev;
+ }
+ }
+ return NULL;
+}
+
+/* Older PROM flush WAR
+ *
+ * 01/16/06 -- This war will be in place until a new official PROM is released.
+ * Additionally note that the struct sn_flush_device_war also has to be
+ * removed from arch/ia64/sn/include/xtalk/hubdev.h
+ */
+static u8 war_implemented = 0;
+
+static void sn_device_fixup_war(u64 nasid, u64 widget, int device,
+ struct sn_flush_device_common *common)
+{
+ struct sn_flush_device_war *war_list;
+ struct sn_flush_device_war *dev_entry;
+ struct ia64_sal_retval isrv = {0,0,0,0};
+
+ if (!war_implemented) {
+ printk(KERN_WARNING "PROM version < 4.50 -- implementing old "
+ "PROM flush WAR\n");
+ war_implemented = 1;
+ }
+
+ war_list = kzalloc(DEV_PER_WIDGET * sizeof(*war_list), GFP_KERNEL);
+ if (!war_list)
+ BUG();
+
+ SAL_CALL_NOLOCK(isrv, SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
+ nasid, widget, __pa(war_list), 0, 0, 0 ,0);
+ if (isrv.status)
+ panic("sn_device_fixup_war failed: %s\n",
+ ia64_sal_strerror(isrv.status));
+
+ dev_entry = war_list + device;
+ memcpy(common,dev_entry, sizeof(*common));
+
+ kfree(war_list);
+}
+
+/*
+ * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
* each node in the system.
*/
static void sn_fixup_ionodes(void)
{
-
- struct sn_flush_device_list *sn_flush_device_list;
+ struct sn_flush_device_kernel *sn_flush_device_kernel;
+ struct sn_flush_device_kernel *dev_entry;
struct hubdev_info *hubdev;
- uint64_t status;
- uint64_t nasid;
- int i, widget;
+ u64 status;
+ u64 nasid;
+ int i, widget, device;
/*
* Get SGI Specific HUB chipset information.
@@ -168,7 +224,7 @@ static void sn_fixup_ionodes(void)
nasid = cnodeid_to_nasid(i);
hubdev->max_segment_number = 0xffffffff;
hubdev->max_pcibus_number = 0xff;
- status = sal_get_hubdev_info(nasid, (uint64_t) __pa(hubdev));
+ status = sal_get_hubdev_info(nasid, (u64) __pa(hubdev));
if (status)
continue;
@@ -195,38 +251,104 @@ static void sn_fixup_ionodes(void)
hubdev->hdi_flush_nasid_list.widget_p =
kmalloc((HUB_WIDGET_ID_MAX + 1) *
- sizeof(struct sn_flush_device_list *), GFP_KERNEL);
-
+ sizeof(struct sn_flush_device_kernel *),
+ GFP_KERNEL);
memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
(HUB_WIDGET_ID_MAX + 1) *
- sizeof(struct sn_flush_device_list *));
+ sizeof(struct sn_flush_device_kernel *));
for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
- sn_flush_device_list = kmalloc(DEV_PER_WIDGET *
- sizeof(struct
- sn_flush_device_list),
- GFP_KERNEL);
- memset(sn_flush_device_list, 0x0,
+ sn_flush_device_kernel = kmalloc(DEV_PER_WIDGET *
+ sizeof(struct
+ sn_flush_device_kernel),
+ GFP_KERNEL);
+ if (!sn_flush_device_kernel)
+ BUG();
+ memset(sn_flush_device_kernel, 0x0,
DEV_PER_WIDGET *
- sizeof(struct sn_flush_device_list));
-
- status =
- sal_get_widget_dmaflush_list(nasid, widget,
- (uint64_t)
- __pa
- (sn_flush_device_list));
- if (status) {
- kfree(sn_flush_device_list);
- continue;
+ sizeof(struct sn_flush_device_kernel));
+
+ dev_entry = sn_flush_device_kernel;
+ for (device = 0; device < DEV_PER_WIDGET;
+ device++,dev_entry++) {
+ dev_entry->common = kmalloc(sizeof(struct
+ sn_flush_device_common),
+ GFP_KERNEL);
+ if (!dev_entry->common)
+ BUG();
+ memset(dev_entry->common, 0x0, sizeof(struct
+ sn_flush_device_common));
+
+ status = sal_get_device_dmaflush_list(nasid,
+ widget,
+ device,
+ (u64)(dev_entry->common));
+ if (status) {
+ if (sn_sal_rev() < 0x0450) {
+ /* shortlived WAR for older
+ * PROM images
+ */
+ sn_device_fixup_war(nasid,
+ widget,
+ device,
+ dev_entry->common);
+ }
+ else
+ BUG();
+ }
+
+ spin_lock_init(&dev_entry->sfdl_flush_lock);
}
- spin_lock_init(&sn_flush_device_list->sfdl_flush_lock);
- hubdev->hdi_flush_nasid_list.widget_p[widget] =
- sn_flush_device_list;
- }
+ if (sn_flush_device_kernel)
+ hubdev->hdi_flush_nasid_list.widget_p[widget] =
+ sn_flush_device_kernel;
+ }
+ }
+}
+
+/*
+ * sn_pci_window_fixup() - Create a pci_window for each device resource.
+ * Until ACPI support is added, we need this code
+ * to setup pci_windows for use by
+ * pcibios_bus_to_resource(),
+ * pcibios_resource_to_bus(), etc.
+ */
+static void
+sn_pci_window_fixup(struct pci_dev *dev, unsigned int count,
+ s64 * pci_addrs)
+{
+ struct pci_controller *controller = PCI_CONTROLLER(dev->bus);
+ unsigned int i;
+ unsigned int idx;
+ unsigned int new_count;
+ struct pci_window *new_window;
+
+ if (count == 0)
+ return;
+ idx = controller->windows;
+ new_count = controller->windows + count;
+ new_window = kcalloc(new_count, sizeof(struct pci_window), GFP_KERNEL);
+ if (new_window == NULL)
+ BUG();
+ if (controller->window) {
+ memcpy(new_window, controller->window,
+ sizeof(struct pci_window) * controller->windows);
+ kfree(controller->window);
+ }
+ /* Setup a pci_window for each device resource. */
+ for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
+ if (pci_addrs[i] == -1)
+ continue;
+
+ new_window[idx].offset = dev->resource[i].start - pci_addrs[i];
+ new_window[idx].resource = dev->resource[i];
+ idx++;
}
+ controller->windows = new_count;
+ controller->window = new_window;
}
void sn_pci_unfixup_slot(struct pci_dev *dev)
@@ -246,21 +368,23 @@ void sn_pci_unfixup_slot(struct pci_dev *dev)
*/
void sn_pci_fixup_slot(struct pci_dev *dev)
{
+ unsigned int count = 0;
int idx;
int segment = pci_domain_nr(dev->bus);
int status = 0;
struct pcibus_bussoft *bs;
struct pci_bus *host_pci_bus;
struct pci_dev *host_pci_dev;
+ struct pcidev_info *pcidev_info;
+ s64 pci_addrs[PCI_ROM_RESOURCE + 1];
struct sn_irq_info *sn_irq_info;
unsigned long size;
unsigned int bus_no, devfn;
pci_dev_get(dev); /* for the sysdata pointer */
- dev->sysdata = kmalloc(sizeof(struct pcidev_info), GFP_KERNEL);
- if (SN_PCIDEV_INFO(dev) <= 0)
+ pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
+ if (pcidev_info <= 0)
BUG(); /* Cannot afford to run out of memory */
- memset(SN_PCIDEV_INFO(dev), 0, sizeof(struct pcidev_info));
sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
if (sn_irq_info <= 0)
@@ -270,22 +394,34 @@ void sn_pci_fixup_slot(struct pci_dev *dev)
/* Call to retrieve pci device information needed by kernel. */
status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
dev->devfn,
- (u64) __pa(SN_PCIDEV_INFO(dev)),
+ (u64) __pa(pcidev_info),
(u64) __pa(sn_irq_info));
if (status)
BUG(); /* Cannot get platform pci device information */
+ /* Add pcidev_info to list in sn_pci_controller struct */
+ list_add_tail(&pcidev_info->pdi_list,
+ &(SN_PCI_CONTROLLER(dev->bus)->pcidev_info));
+
/* Copy over PIO Mapped Addresses */
for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
unsigned long start, end, addr;
- if (!SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx])
+ if (!pcidev_info->pdi_pio_mapped_addr[idx]) {
+ pci_addrs[idx] = -1;
continue;
+ }
start = dev->resource[idx].start;
end = dev->resource[idx].end;
size = end - start;
- addr = SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx];
+ if (size == 0) {
+ pci_addrs[idx] = -1;
+ continue;
+ }
+ pci_addrs[idx] = start;
+ count++;
+ addr = pcidev_info->pdi_pio_mapped_addr[idx];
addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
dev->resource[idx].start = addr;
dev->resource[idx].end = addr + size;
@@ -294,23 +430,27 @@ void sn_pci_fixup_slot(struct pci_dev *dev)
else
dev->resource[idx].parent = &iomem_resource;
}
+ /* Create a pci_window in the pci_controller struct for
+ * each device resource.
+ */
+ if (count > 0)
+ sn_pci_window_fixup(dev, count, pci_addrs);
/*
* Using the PROMs values for the PCI host bus, get the Linux
* PCI host_pci_dev struct and set up host bus linkages
*/
- bus_no = (SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32) & 0xff;
- devfn = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle & 0xffffffff;
+ bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff;
+ devfn = pcidev_info->pdi_slot_host_handle & 0xffffffff;
host_pci_bus = pci_find_bus(segment, bus_no);
host_pci_dev = pci_get_slot(host_pci_bus, devfn);
- SN_PCIDEV_INFO(dev)->host_pci_dev = host_pci_dev;
- SN_PCIDEV_INFO(dev)->pdi_host_pcidev_info =
- SN_PCIDEV_INFO(host_pci_dev);
- SN_PCIDEV_INFO(dev)->pdi_linux_pcidev = dev;
+ pcidev_info->host_pci_dev = host_pci_dev;
+ pcidev_info->pdi_linux_pcidev = dev;
+ pcidev_info->pdi_host_pcidev_info = SN_PCIDEV_INFO(host_pci_dev);
bs = SN_PCIBUS_BUSSOFT(dev->bus);
- SN_PCIDEV_INFO(dev)->pdi_pcibus_info = bs;
+ pcidev_info->pdi_pcibus_info = bs;
if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
@@ -320,11 +460,11 @@ void sn_pci_fixup_slot(struct pci_dev *dev)
/* Only set up IRQ stuff if this device has a host bus context */
if (bs && sn_irq_info->irq_irq) {
- SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = sn_irq_info;
- dev->irq = SN_PCIDEV_INFO(dev)->pdi_sn_irq_info->irq_irq;
+ pcidev_info->pdi_sn_irq_info = sn_irq_info;
+ dev->irq = pcidev_info->pdi_sn_irq_info->irq_irq;
sn_irq_fixup(dev, sn_irq_info);
} else {
- SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = NULL;
+ pcidev_info->pdi_sn_irq_info = NULL;
kfree(sn_irq_info);
}
}
@@ -338,6 +478,7 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
int status = 0;
int nasid, cnode;
struct pci_controller *controller;
+ struct sn_pci_controller *sn_controller;
struct pcibus_bussoft *prom_bussoft_ptr;
struct hubdev_info *hubdev_info;
void *provider_soft = NULL;
@@ -349,10 +490,15 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
return; /*bus # does not exist */
prom_bussoft_ptr = __va(prom_bussoft_ptr);
- controller = kzalloc(sizeof(struct pci_controller), GFP_KERNEL);
+ /* Allocate a sn_pci_controller, which has a pci_controller struct
+ * as the first member.
+ */
+ sn_controller = kzalloc(sizeof(struct sn_pci_controller), GFP_KERNEL);
+ if (!sn_controller)
+ BUG();
+ INIT_LIST_HEAD(&sn_controller->pcidev_info);
+ controller = &sn_controller->pci_controller;
controller->segment = segment;
- if (!controller)
- BUG();
if (bus == NULL) {
bus = pci_scan_bus(busnum, &pci_root_ops, controller);
@@ -390,6 +536,29 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
}
/*
+ * Setup pci_windows for legacy IO and MEM space.
+ * (Temporary until ACPI support is in place.)
+ */
+ controller->window = kcalloc(2, sizeof(struct pci_window), GFP_KERNEL);
+ if (controller->window == NULL)
+ BUG();
+ controller->window[0].offset = prom_bussoft_ptr->bs_legacy_io;
+ controller->window[0].resource.name = "legacy_io";
+ controller->window[0].resource.flags = IORESOURCE_IO;
+ controller->window[0].resource.start = prom_bussoft_ptr->bs_legacy_io;
+ controller->window[0].resource.end =
+ controller->window[0].resource.start + 0xffff;
+ controller->window[0].resource.parent = &ioport_resource;
+ controller->window[1].offset = prom_bussoft_ptr->bs_legacy_mem;
+ controller->window[1].resource.name = "legacy_mem";
+ controller->window[1].resource.flags = IORESOURCE_MEM;
+ controller->window[1].resource.start = prom_bussoft_ptr->bs_legacy_mem;
+ controller->window[1].resource.end =
+ controller->window[1].resource.start + (1024 * 1024) - 1;
+ controller->window[1].resource.parent = &iomem_resource;
+ controller->windows = 2;
+
+ /*
* Generic bus fixup goes here. Don't reference prom_bussoft_ptr
* after this point.
*/
@@ -421,7 +590,7 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
error_return:
- kfree(controller);
+ kfree(sn_controller);
return;
}
@@ -434,7 +603,7 @@ void sn_bus_store_sysdata(struct pci_dev *dev)
dev_dbg(dev, "%s: out of memory!\n", __FUNCTION__);
return;
}
- element->sysdata = dev->sysdata;
+ element->sysdata = SN_PCIDEV_INFO(dev);
list_add(&element->entry, &sn_sysdata_list);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 03:52:40 +0000